Infrared line emission in the interacting region of ARP 244 (the antennae): Colliding molecular cloud complexes?

被引：4

作者：

Liang, MC

Geballe, TR

Lo, KY

Kim, DC

机构：

[1] Acad Sinica, Inst Astron & Astrophys, Taipei 115, Taiwan

[2] Tsing Hua Univ, Dept Phys, Hsinchu 300, Taiwan

[3] Gemini Observ, Hilo, HI 96720 USA

来源：

ASTROPHYSICAL JOURNAL | 2001年 / 549卷 / 01期

关键词：

galaxies : interactions; galaxies : kinematics and dynamics; galaxies : starburst; infrared : galaxies;

D O I：

10.1086/319149

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report velocity-resolved spectroscopy of infrared hydrogen recombination lines in the interacting region of the Antennae galaxies (NGC 4038/4039). It generally has been assumed that the active star formation found there is due to the interaction of the disks of the two galaxies and indeed two molecular cloud complexes, separated in velocity by similar to 100 km s(-1), have been observed in the southern part of this region. Our measurements imply that the two cloud complexes are moving away from each other. This result poses interesting questions about the physical mechanisms leading to starbursts in Arp 244 and other interacting galaxies.

引用

页码：L59 / L62

页数：4

共 23 条

[1] AALTO S, 1995, ASTRON ASTROPHYS, V300, P369
[2] SURVEY OF INTER-STELLAR H-I FROM L-ALPHA ABSORPTION-MEASUREMENTS .2.
BOHLIN, RC
SAVAGE, BD
DRAKE, JF
[J]. ASTROPHYSICAL JOURNAL, 1978, 224 (01) : 132 - 142
[3] High-resolution CO observations of luminous infrared galaxies
Bryant, PM
Scoville, NZ
[J]. ASTRONOMICAL JOURNAL, 1999, 117 (06) : 2632 - 2655
[4] Rotating nuclear rings and extreme starbursts in ultraluminous galaxies
Downes, D
Solomon, PM
[J]. ASTROPHYSICAL JOURNAL, 1998, 507 (02) : 615 - 654
[5] FABIANO G, 1983, APJ, V266, pL5
[6] HUMMEL E, 1986, ASTRON ASTROPHYS, V155, P151
[7] RECOMBINATION-LINE INTENSITIES FOR HYDROGENIC IONS .1. CASE-B CALCULATIONS FOR H-I AND HE-II
HUMMER, DG
STOREY, PJ
[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1987, 224 (04) : 801 - &
[8] Mirabel IF, 1998, ASTRON ASTROPHYS, V333, pL1
[9] MOUNTAIN CM, 1990, P SOC PHOTO-OPT INS, V1235, P25, DOI 10.1117/12.19068
[10] VLA observations of the nearby merger NGC 4038/4039: HII regions and supernova remnants in the "antennae"
Neff, SG
Ulvestad, JS
[J]. ASTRONOMICAL JOURNAL, 2000, 120 (02) : 670 - 696

← 1 2 3 →